/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #080c0a;
  --bg-elevated: #0f1512;
  --bg-card:   #121a16;
  --border:    #1e2e26;
  --border-light: #2a3d34;
  --text:      #e8f0ec;
  --text-muted:#8fa89a;
  --green-400: #34d399;
  --green-500: #10b981;
  --green-600: #059669;
  --green-glow: rgba(16, 185, 129, 0.25);
  --radius:    12px;
  --radius-lg: 20px;
  --font:      'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-sm  { padding: 0.5rem 1.125rem; font-size: 0.875rem; }
.btn-lg  { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--green-400), var(--green-500));
  color: #041008;
  box-shadow: 0 0 24px var(--green-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
  box-shadow: 0 0 36px var(--green-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-light);
}
.btn-ghost:hover {
  border-color: var(--green-500);
  color: var(--green-400);
}

.btn-outline {
  background: transparent;
  color: var(--green-400);
  border: 1px solid var(--green-600);
}
.btn-outline:hover {
  background: rgba(16, 185, 129, 0.08);
  border-color: var(--green-400);
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(8, 12, 10, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a:not(.btn) {
  font-size: 0.9375rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:not(.btn):hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Hero ── */
.hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.hero-glow-1 {
  width: 600px; height: 600px;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(16,185,129,0.18) 0%, transparent 70%);
}
.hero-glow-2 {
  width: 400px; height: 400px;
  bottom: 0; right: -100px;
  background: radial-gradient(circle, rgba(52,211,153,0.1) 0%, transparent 70%);
}

.hero-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--green-400);
  margin-bottom: 1.75rem;
}

.pulse {
  width: 8px; height: 8px;
  background: var(--green-400);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52,211,153,0.5); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(52,211,153,0); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--green-400) 0%, var(--green-500) 50%, #6ee7b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 2rem;
  padding: 1.25rem 2.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stat { text-align: center; }
.stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--green-400);
  letter-spacing: -0.02em;
}
.stat span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Phone mockup */
.hero-preview {
  margin-top: 4rem;
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.phone-mock {
  width: min(340px, 88vw);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 32px;
  padding: 12px;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5), 0 0 60px rgba(16,185,129,0.08);
}

.phone-notch {
  width: 80px; height: 6px;
  background: var(--border);
  border-radius: 100px;
  margin: 4px auto 16px;
}

.phone-screen {
  background: #0a100e;
  border-radius: 22px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-height: 320px;
}

.msg {
  max-width: 88%;
  padding: 0.75rem 1rem;
  border-radius: 14px;
  font-size: 0.8125rem;
  line-height: 1.5;
}
.msg-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
  opacity: 0.7;
}
.msg-incoming {
  align-self: center;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  text-align: center;
  max-width: 100%;
}
.msg-ai {
  align-self: flex-start;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--text);
}
.msg-ai .msg-label { color: var(--green-400); }
.msg-reply {
  align-self: flex-end;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.typing {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding-left: 0.25rem;
}
.typing span {
  width: 5px; height: 5px;
  background: var(--green-500);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* ── Sections ── */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}
.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green-400);
  margin-bottom: 0.75rem;
}
.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
}
.section-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* ── Features ── */
.features {
  padding: 100px 0;
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  border-color: var(--border-light);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 12px;
  color: var(--green-400);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Pricing ── */
.pricing {
  padding: 100px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 780px;
  margin: 0 auto;
  align-items: start;
}

.pricing-card {
  position: relative;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}
.pricing-card:hover { border-color: var(--border-light); }

.pricing-card-featured {
  border-color: var(--green-600);
  box-shadow: 0 0 48px rgba(16, 185, 129, 0.12);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.3rem 1rem;
  background: linear-gradient(135deg, var(--green-400), var(--green-500));
  color: #041008;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

.pricing-header h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.pricing-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  gap: 0.125rem;
  margin-bottom: 1.75rem;
}
.currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
}
.price {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text);
}
.period {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-left: 0.25rem;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}
.pricing-features li::before {
  content: '';
  flex-shrink: 0;
  width: 18px; height: 18px;
  margin-top: 2px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2310b981'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ── Sign Up ── */
.signup {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}

.signup-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 100%, rgba(16,185,129,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.signup-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.signup-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
}
.signup-content p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.signup-form input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.signup-form input::placeholder { color: var(--text-muted); }
.signup-form input:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.form-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── Footer ── */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-footer { font-size: 1rem; }
.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── Mobile nav ── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a:not(.btn) {
    display: block;
    padding: 0.875rem 1.5rem;
  }
  .nav-links .btn { margin: 0.5rem 1.5rem 0; }

  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero-stats {
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.5rem 2rem;
  }
  .stat-divider { width: 60px; height: 1px; }

  .signup-inner {
    grid-template-columns: 1fr;
    padding: 2rem 1.5rem;
  }
  .form-row { grid-template-columns: 1fr; }

  .footer-inner { justify-content: center; text-align: center; flex-direction: column; }
}